package com.woniuxy.main.handler;

import java.io.IOException;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.shiro.session.Session;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.woniuxy.main.pojo.Recharge;
import com.woniuxy.main.pojo.User;
import com.woniuxy.main.service.RechargeService;
import com.woniuxy.main.util.AlipayConfig;
import com.woniuxy.main.util.SessionUtil;

import lombok.Data;

@Controller
@RequestMapping("/recharge")
@Scope("prototype")
@Data
public class RechargeHandler {
	
	@Resource
	private RechargeService rechargeService;
	
	@RequestMapping("/insertRecharge")
	@ResponseBody
	public String insertRecharge(HttpServletRequest request, Recharge recharge){
		String result = "生成充值记录失败！";
		//获取session
		HttpSession session = request.getSession();
		int uid = (int) session.getAttribute("uid");
		recharge.setUid(uid);
		int row = rechargeService.insertRecharge(recharge);
		if(row > 0){
			//将充值记录号，金额存储到session中
			session.setAttribute("reid", recharge.getReid());
			session.setAttribute("reprice", recharge.getReprice());
			result = "生成充值记录成功！";
		}
		return result;
	}
	
	@RequestMapping("/payRecharge")
	//请求支付宝支付页面
	public void payRecharge(HttpServletRequest request,HttpServletResponse response) throws Exception{
		//获得初始化的AlipayClient
		AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

		//设置请求参数(支付宝同步和异步返回请求的通知数据)
		AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
		alipayRequest.setReturnUrl(AlipayConfig.return_url);
		alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

		/*//商户订单号，商户网站订单系统中唯一订单号，必填
		String out_trade_no = new String(request.getParameter("WIDout_trade_no").getBytes("ISO-8859-1"),"UTF-8");
		//付款金额，必填
		String total_amount = new String(request.getParameter("WIDtotal_amount").getBytes("ISO-8859-1"),"UTF-8");
		//订单名称，必填
		String subject = new String(request.getParameter("WIDsubject").getBytes("ISO-8859-1"),"UTF-8");
		//商品描述，可空
		String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"),"UTF-8");*/
		
		HttpSession session = request.getSession();
		//充值记录号
		String reid = (String) session.getAttribute("reid");
		//充值金额
		String reprice = (BigDecimal)session.getAttribute("reprice")+"";
		//订单名称
		String subject = "账户充值";
		
		alipayRequest.setBizContent("{\"out_trade_no\":\""+ reid +"\"," 
				+ "\"total_amount\":\""+ reprice +"\"," 
				+ "\"subject\":\""+ subject +"\"," 
				+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
		
		
		//若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
		//alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
		//		+ "\"total_amount\":\""+ total_amount +"\"," 
		//		+ "\"subject\":\""+ subject +"\"," 
		//		+ "\"body\":\""+ body +"\"," 
		//		+ "\"timeout_express\":\"10m\"," 
		//		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
		//请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

		//请求
		String result = alipayClient.pageExecute(alipayRequest).getBody();
		//设置响应内容类型
		response.setContentType("text/html;charset=utf8");
		//输出
		response.getWriter().println(result);
	}

	//支付成功接收支付宝返回给服务器的异步通知，用于更新充值记录
	@RequestMapping("/notify")
	public void updateRecharge(HttpServletRequest request,HttpServletResponse response) throws Exception{
		//获取支付宝POST过来反馈信息
		Map<String,String> params = new HashMap<String,String>();
		Map<String,String[]> requestParams = request.getParameterMap();
		for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
			String name = (String) iter.next();
			String[] values = (String[]) requestParams.get(name);
			String valueStr = "";
			for (int i = 0; i < values.length; i++) {
				valueStr = (i == values.length - 1) ? valueStr + values[i]
						: valueStr + values[i] + ",";
			}
			//乱码解决，这段代码在出现乱码时使用
			/*valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");*/
			params.put(name, valueStr);
		}

		boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

		//——请在这里编写您的程序（以下代码仅作参考）——

		/* 实际验证过程建议商户务必添加以下校验：
		1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
		2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
		3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
		4、验证app_id是否为该商户本身。
		 */
		if(signVerified) {//验证成功
			//充值记录号
			String reid = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

			//支付宝交易号
			String redeal = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

			//交易状态
			String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");

			if(trade_status.equals("TRADE_FINISHED")){
				//判断该笔订单是否在商户网站中已经做过处理
				//如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
				//如果有做过处理，不执行商户的业务程序

				//注意：
				//退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
			}else if (trade_status.equals("TRADE_SUCCESS")){
				//判断该笔订单是否在商户网站中已经做过处理
				//如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
				//如果有做过处理，不执行商户的业务程序

				//注意：
				//付款完成后，支付宝系统发送该交易状态通知
				
				/*交易成功，将支付宝交易号等信息更新到数据库中*/
				/*//获取session
				Session session = SessionUtil.getSession();
				//获取用户id
				int uid = (int) session.getAttribute("uid");*/
				//将数据封装到recharge中
				Recharge recharge = new Recharge();
				recharge.setReid(reid);
				recharge.setRedeal(redeal);
				recharge.setCreateDate(new SimpleDateFormat("y-M-d HH:mm:ss").format(new Date()));
				//调用service层方法，存储数据
				rechargeService.updateRecharge(recharge);
				/*//移除作用域的值
				session.removeAttribute("reid");
				session.removeAttribute("reprice");*/
			}

			response.getWriter().println("success");

		}else {//验证失败
			response.getWriter().println("fail");

			//调试用，写文本函数记录程序运行情况是否正常
			//String sWord = AlipaySignature.getSignCheckContentV1(params);
			//AlipayConfig.logResult(sWord);
		}
	}

	//支付成功后接收支付宝的同步通知，一般用于跳转页面
	@RequestMapping("/synReturn")
	public void synReturn(HttpServletResponse response){
		try {
			response.sendRedirect("http://localhost:8080/userAction/findUserByUid");
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	//显示用户充值记录
	@RequestMapping("/allRecharge")
	public ModelAndView showRecharge(HttpServletRequest request, User user){
		//获取session
		HttpSession session = request.getSession();
		int uid = (int) session.getAttribute("uid");
		user.setUid(uid);
		ModelAndView modelAndView = new ModelAndView();
		List<Recharge> recharges = rechargeService.allRecharge(user);
		modelAndView.addObject("recharges", recharges);
		modelAndView.setViewName("/recharge.html");
		return modelAndView;
	}
}
